{"id":"CVE-2014-6272","aliases":["DEBIAN-CVE-2014-6272","DLA-137-1","DSA-3119-1","EUVD-2014-6158","GHSA-246p-m32j-f38r","MGASA-2015-0009","UBUNTU-CVE-2014-6272","USN-2477-1","openSUSE-SU-2024:10236-1","openSUSE-SU-2024:10720-1"],"status":"published","title":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0...","description":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02084,"percentile":0.8169,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-189"],"published":"2015-01-06T00:00:00Z","modified":"2026-10-23T15:47:39Z","fixes":[{"ecosystem":"Debian:12","package":"libevent","fixed_in":["2.0.21-stable-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libevent","fixed_in":["2.0.21-stable-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libevent","fixed_in":["2.0.21-stable-2"],"sources":["osv"]},{"ecosystem":"Debian:6.0","package":"libevent","fixed_in":["1.4.13-stable-1+deb6u1"],"sources":["osv"]},{"ecosystem":"Mageia:4","package":"libevent","fixed_in":["2.0.21-5.1.mga4"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"libevent","fixed_in":["2.0.21-stable-1ubuntu1.14.04.1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"dnscrypt-proxy","fixed_in":["2.1.0-1.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libevent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.21-stable-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libevent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.21-stable-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libevent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.21-stable-2"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"libevent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.13-stable-1+deb6u1"}]}],"versions":["1.4.13-stable-1"]},{"source":"osv","ecosystem":"Debian:7","package":"libevent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.19-stable-3+deb7u1"}]}],"versions":["2.0.19-stable-3"],"bundled":2},{"source":"osv","ecosystem":"Mageia:4","package":"libevent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.21-5.1.mga4"}]}]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"libevent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.21-stable-1ubuntu1.14.04.1"}]}],"versions":["2.0.21-stable-1","2.0.21-stable-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"libevent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.21-stable-1ubuntu1.14.04.1"}]}],"versions":["2.0.21-stable-1","2.0.21-stable-1ubuntu1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"dnscrypt-proxy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0-1.2"}]}]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"libevent_project","product":"libevent"}],"references":[{"url":"http://archives.seul.org/libevent/users/Jan-2015/msg00010.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.debian.org/security/2015/dsa-3119","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://puppet.com/security/cve/CVE-2014-6272","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.slackware.com/security/viewer.php?l=slackware-security\u0026y=2016\u0026m=slackware-security.366317","tags":["vendor-advisory","x_refsource_SLACKWARE","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2014-6272"},{"url":"https://github.com/advisories/GHSA-246p-m32j-f38r"},{"url":"https://security-tracker.debian.org/tracker/CVE-2014-6272","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2015-0009.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=14970","tags":["report"]},{"url":"https://www.debian.org/security/2015/dsa-3119","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2014-6272","tags":["report"]},{"url":"http://archives.seul.org/libevent/users/Jan-2015/msg00011.html","tags":["report"]},{"url":"http://archives.seul.org/libevent/users/Jan-2015/msg00012.html","tags":["report"]},{"url":"http://archives.seul.org/libevent/users/Jan-2015/msg00013.html","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-2477-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2014-6272","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2014-6272","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2014-6272","description":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.","status":"published","published":"2015-08-24T14:00:00Z","modified":"2024-08-06T12:10:13.286Z","updated_at":"2026-11-02T14:33:44.569327Z"}],"euvd":[{"id":"EUVD-2014-6158","description":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.","status":"published","published":"2015-08-24T14:00:00Z","modified":"2024-08-06T12:10:13Z","updated_at":"2026-11-03T01:57:00.015932Z"}],"ghsa":[{"id":"GHSA-246p-m32j-f38r","title":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0...","description":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.","status":"published","published":"2022-05-17T00:16:50Z","modified":"2023-02-03T05:01:22Z","updated_at":"2026-11-02T14:52:57.625741Z"}],"nvd":[{"id":"CVE-2014-6272","description":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.","status":"published","published":"2015-08-24T14:59:01.353Z","modified":"2026-06-17T00:12:48.96Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-189"],"updated_at":"2026-11-02T14:02:58.385843Z"}],"osv":[{"id":"CVE-2014-6272","description":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.","status":"published","published":"2015-08-24T14:59:01Z","modified":"2026-04-16T06:18:05.580830186Z","updated_at":"2026-11-02T15:43:59.654289Z"},{"id":"DEBIAN-CVE-2014-6272","description":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.","status":"published","published":"2015-08-24T14:59:01.353Z","modified":"2026-10-23T15:47:39.139086507Z","updated_at":"2026-11-02T15:45:26.134753Z"},{"id":"DLA-137-1","title":"libevent - security update","status":"published","published":"2015-01-26T00:00:00Z","modified":"2026-03-09T01:01:51.986442Z","updated_at":"2026-11-02T15:46:09.336894Z"},{"id":"DSA-3119-1","title":"libevent - security update","status":"published","published":"2015-01-06T00:00:00Z","modified":"2026-03-09T01:18:33.794477Z","updated_at":"2026-11-02T15:46:15.843838Z"},{"id":"MGASA-2015-0009","title":"Updated libevent packages fix CVE-2014-6272","description":"Updated libevent packages fix security vulnerability:\n\nAndrew Bartlett of Catalyst reported a defect affecting certain applications\nusing the Libevent evbuffer API. This defect leaves applications which pass\ninsanely large inputs to evbuffers open to a possible heap overflow or\ninfinite loop. In order to exploit this flaw, an attacker needs to be able to\nfind a way to provoke the program into trying to make a buffer chunk larger\nthan what will fit into a single size_t or off_t (CVE-2014-6272).\n","status":"published","published":"2015-01-07T15:14:58Z","modified":"2026-04-16T06:23:41.877258937Z","updated_at":"2026-11-02T15:49:39.488462Z"},{"id":"openSUSE-SU-2024:10236-1","title":"libevent-2_0-5-2.0.22-2.7 on GA media","description":"These are all security issues fixed in the libevent-2_0-5-2.0.22-2.7 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:47:21.560839Z","updated_at":"2026-11-02T16:58:33.135986Z"},{"id":"openSUSE-SU-2024:10720-1","title":"dnscrypt-proxy-2.1.0-1.2 on GA media","description":"These are all security issues fixed in the dnscrypt-proxy-2.1.0-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:21:33.912719Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"UBUNTU-CVE-2014-6272","description":"Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.","status":"published","published":"2015-01-06T00:00:00Z","modified":"2026-04-22T09:48:13.243842Z","updated_at":"2026-11-02T15:54:09.378953Z"},{"id":"USN-2477-1","title":"libevent vulnerability","description":"Andrew Bartlett discovered that libevent incorrectly handled large inputs\nto the evbuffer API. A remote attacker could possibly use this issue with\nan application that uses libevent to cause a denial of service, or possibly\nexecute arbitrary code.\n","status":"published","published":"2015-01-19T14:53:22Z","modified":"2026-04-22T09:07:36.44886Z","updated_at":"2026-11-02T16:58:09.227524Z"}]}}